【摘要】 通过正交试验,研究了膨胀珍珠岩与玻化微珠复合骨料、粉煤灰、聚丙烯纤维和引气剂对保温砂浆的物理、力学性能以及保温性能的影响。用膨胀珍珠岩与玻化微珠按适宜比例配合组成复合骨料来制备保温砂浆,可有效改善骨料颗粒级配,降低砂浆的干密度,提高强度。掺加粉煤灰,不仅可降低砂浆的干密度,而且可有效降低成本。在砂浆中掺入聚丙烯纤维可有效提高砂浆的抗折强度。引气剂的掺入可以进一步降低砂浆的干密度,改善其保温性能,同时也可提高砂浆的流动性。更多还原

【Abstract】 Through the orthogonal experiments,the influences of expanded perlite and glazed hollow bead composite aggregates,fly ash,polypropylene fiber and air-entraining agent on physical and mechanical properties and thermal insulation properties of thermal insulation mortar are studied.The thermal insulation mortar which prepared by expanded perlite and glazed hollow bead according to the appropriate proportion,can effectively improve the aggregate particle gradation,reduce the dry density of mortar,and increase the strength.By adding the fly ash,it not only can reduce the dry density of the mortar,but also can effectively reduce the cost.Adding polypropylene fiber in mortar can effectively improve the flexural strength of mortar.Adding air-entraining agent can further reduce the dry density of mortar,improve the heat preservation performance,and improve the liquidity of mortar.更多还原